Process of accelerating the separation of nitroglycerin from acids.



No. 880,373. I PATLENTED FEB. 25, 1908.

R. ESGALES & M. NOVAK.

PROCESS OF ACCELERATING THE SEPARATION OF NITROGLYOERIN FROM ACIDS.

APPLICATION FILED SEPT. 5, 1907.

ATTORNEYS RICHARD ESGALES AND MILANO NOVAK, OF MUNICH, GERMANY.

rnoonss on eocnnnniarrue ran snrenmron or inrneunrcnarir Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed September 1907. Serial No. 391.492-

all whom it may concern."

Be it known that we, RICHARD ESCALES and Minnie Nora-an, citizens of the Kingdom the Separation of llitroglycerin from stcids;

the surface of the solution.

and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertuins to make and use the same.

This invention relates to an improved procfor accelerating the separation of nitroglycerin from acids.

In the manufacture of nitroglycerin during the first and also the second separation of the nitroglycerin from waste mixed acids,

there is considerable'danger due to the slowness of the process of separation.

By the present invention the intro-glycerin is separated in a few minutes, either in the extraction of the same from the solution or when cleansing the waste acids. This is done by passing an electric current through the solution containing the nitroglycerin, the electrodes being suitably formed or platinurnwire, the one being arranged on the bottom of the recipient and the other near Instead of platinum wire electrodes others of suitable material and shape may be used.

An apparatus suitable for carrying out our invention is shown in the accompanying drawing, in which Figure l is a cross section and Fig. view of such apparatus.

The vessel A made of glass or other suitable material contains the electrolyte B (solution containing nitroglycerin) and the electrodes C, C, made of platinum wire and 2 a plan arranged one on thebottorn of the vessel and the other near the surface of the solution. Current is conveyed to thc'clectrodcs through wires 1), D.

The small as bubbles formed during the electrolysis craw the 11itr0 l':cerir1, suspended in the mixed acids, to r :e surface of the same from whence it canb'e easily removed. To assist the process small percentages of water, sodium finer-id, etc, can be added to the acids either before or during the electrolysis.

The process is principally intended to be i used at the second separation, that is, for cleaning the waste acids. The advantages of this process-are the following: 1. Complete extraction of the nitroglycerin from the waste acids in a very short time. 2. The waste acids do not lose concentration or become dirty, which is of great value in the extraction of the remaining The process itself absolutely free from danger and its use reduces the danger in 2. nitroglycerin factory.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what We claim is:

1. The process of separating nitroglycerin from mixed acids, which consists in assing an electric current between electrodest irough' a liquid mixture of acidsand nitroglycerin, thereby causing the evolution of gas bubbles from the electrodes which carry the nitroglycerin particles upward, and then removing the nitroglycerin from the surface of liquid.

2. The process of separating nitroglycerin from mixed acids, which consists in addin to the mixture an electrolyte which will facilitate the carrying out of the process, then passing an electric current between electrodes, through the liquid, thereby causing the evolution of gas bubbles from the electrodes which carry the nitroglycerin particles upward, and then removing the nitroglycerin from the surface of the liquid.

3. The process of separating nitroglycerin from mixed acids, which consists in adding to the mixture of acids and nitroglycerin, an aqueous electrolyte containing a soluble salt, passing an electric current from an anode to a cathode through the liquid, causing the nitroglycerin to rise to the surface by the evolution of gas from the electrodes, and removing the nitroglycerin from the top of the liquid.

4. The process of separating nitroglycerin from mixed acids, which consists in adding to the mixture of acids and nitroglycerin an aqueouselectrolyte containingsodiumfluorid, our signatures in the presence of two witpassing an elleetric1 cuflrerit frodm an anode to nesses, 7 av cat iode t roug1 t e iqui causin the i r nitroglycerin to rise to the surface b? the I evolution of gas from the electrodes, and I L removing the nitroglycerin from the top of \Vitnesses: the liquid.- LOUIS Fhh'lF/ELLE'R,

In testimony whereof We hereunto affix l GEORG 612mm. 

